Cod sursa(job #13328)

Utilizator bogdan2412Bogdan-Cristian Tataroiu bogdan2412 Data 6 februarie 2007 11:30:05
Problema Diviz Scor 70
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.24 kb
#include <stdio.h>
#include <string.h>

#define MAXN 205
#define MAXK 105
#define MOD 30103

int K, A, B, nN;
char N[MAXN];
unsigned char first[MAXN][11];
unsigned short nr[2][MAXN][MAXK];

int main()
{
	freopen("diviz.in", "rt", stdin);
	freopen("diviz.out", "wt", stdout);
	scanf("%d %d %d %s", &K, &A, &B, N);
	for (nN = 0; N[nN]; nN++);
	for (int j = 0; j < 10; j++)
		first[nN][j] = nN;
	for (int i = nN - 1; i >= 0; i--)
	{
		for (int j = 0; j < 10; j++)
			first[i][j] = first[i + 1][j];
		first[i][ N[i] - '0' ] = i;
	}

	for (int i = 1; i < 10; i++)
		nr[1][ first[0][i] ][i % K] = 1;

	unsigned int NR = 0, step = 1;
	if (A <= 1 && first[0][0] != nN)
		NR++;
	for (int j = 1; j <= B; j++, step ^= 1)
	{
		for (int i = 0; i < nN; i++)
			for (int k = 0; k < K; k++)
				nr[1 ^ step][i][k] = 0;
		for (int i = j - 1; i < nN; i++)
		{
			if (A <= j)
			{
				NR += nr[step][i][0];
				if (NR >= MOD)
					NR -= MOD;
			}

			for (int k = 0; k < K; k++)
				for (int c = 0; c < 10; c++)
				{
					if (first[i + 1][c] == nN)
						continue;
	
					int _i = first[i + 1][c], _k = (k * 10 + c) % K;
					nr[1 ^ step][_i][_k] += nr[step][i][k];
					if (nr[1 ^ step][_i][_k] >= MOD)
						nr[1 ^ step][_i][_k] -= MOD;
				}
		}
	}
	printf("%d\n", NR);
	return 0;
}